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Development of a gravity meter using an optical spring effet inside Fabry-Perot cavity

Research Project

Project/Area Number 25610131
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Solid earth and planetary physics
Research InstitutionThe University of Tokyo

Principal Investigator

Miyoki Shinji  東京大学, 宇宙線研究所, 准教授 (20302680)

Project Period (FY) 2013-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsFabry-Perot共振器 / Optical Spring / 精密長さ計測 / 半共振 / 光輻射圧 / Fabry-Perot共振器 / Optical spring / 反共振 / ファブリペロー共振器 / 重力 / 重力計 / 光圧浮上 / 光りばね効果
Outline of Final Research Achievements

We developed a novel technique for a gravity meter using optical radiation pressure to obtain better sensitivity than that of a superconductive gravity meter. In this scheme, an optical Fabry-Perot(FP) cavity is set vertically and is set semi-resonant state to obtain an optical spring effect. Additionally, one of mirrors for the FP cavity is planed to be levitated by radiation pressure of a laser beam inside the Fabry-Perot cavity by setting the weight of the mirror light. Although we encountered an unstable phenomena due to the optical spring state, we succeeded to keep the semi-resonant state by a moderate feedback control system and verified the effect of the radiation pressure inside the FP cavity.

Report

(5 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (10 results)

All 2017 2016 2015 2014 Other

All Presentation (10 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Presentation] KAGRAの現状2017

    • Author(s)
      鈴木敏一, KAGRAコラボレーション
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪大学、大阪府・豊中市
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] KAGRA Present Status2016

    • Author(s)
      S.Miyoki and KAGRA Collaboration
    • Organizer
      NCTS Annual Theory Meeting
    • Place of Presentation
      新竹市、台湾国
    • Year and Date
      2016-12-06
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 大型低温重力波望遠鏡KAGRAプロジェクトの現状2016

    • Author(s)
      道村唯太, The KAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      宮崎大学、宮崎県・宮崎市
    • Year and Date
      2016-09-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] 大型低温重力波望遠鏡(KAGRA)プロジェクトの現状2016

    • Author(s)
      高橋竜太郎とKAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-21
    • Related Report
      2015 Research-status Report
  • [Presentation] KAGRAデータ転送システムの開発:基本設計と性能テスト2016

    • Author(s)
      大原謙一(共同17人中8番目)
    • Organizer
      日本物理学会
    • Place of Presentation
      東北学院大学
    • Year and Date
      2016-03-21
    • Related Report
      2015 Research-status Report
  • [Presentation] 大型低温重力波望遠鏡(KAGRA)プロジェクトの現状2015

    • Author(s)
      内山隆とKAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2015-09-27
    • Related Report
      2015 Research-status Report
  • [Presentation] 計算機を利用したKAGRAの制御(VII)2015

    • Author(s)
      宮川治とKAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2015-09-27
    • Related Report
      2015 Research-status Report
  • [Presentation] 計算機を利用したKAGRAの制御(VI)2014

    • Author(s)
      宮川治,KAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      佐賀大学
    • Year and Date
      2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] 大型低温重力波望遠鏡(KAGRA)プロジェクトの現状2014

    • Author(s)
      麻生洋一,KAGRA Collaboration
    • Organizer
      日本物理学会
    • Place of Presentation
      佐賀大学
    • Year and Date
      2014-09-20
    • Related Report
      2014 Research-status Report
  • [Presentation] 極限光計測技術で探る時空と巨視的量子性

    • Author(s)
      三代木伸二
    • Organizer
      日本光学会・シンポジウム「光共鳴トラッピングと物質マニピュレーション」
    • Place of Presentation
      奈良、日本
    • Related Report
      2013 Research-status Report
    • Invited

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Published: 2014-07-25   Modified: 2019-07-29  

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